3 ms·

> But now I know the fields are continuous. Wait 'til you hear of quantum electrodynamics ;)

• Koshkin 9y ago
  To be fair, this is about classical electromagnetism. What is annoying though, it is the pervasive practice according to which some authors completely ignore H ("intensity of the magnetic field") while others pretend to know nothing (and nor should their students) about B ("magnetic induction"). Somewhat less annoyingly, the teachers of electromagnetism rarely introduce the students to the formulation in terms of differential forms, which many consider a better, more intuitive way of doing electrodynamics compared to vector analysis (which student still should learn, of course).